Method for producing thin-walled articles from plastic or rubber

Details Method for producing thin-walled articles from plastic or rubber Method for producing thin-walled articles from plastic or rubber

1982-01-22

1984-07-24

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Ion-exchange polymer or process of preparing

521 28, 521 29, 521 51, C08D 520

Patent

active

044618476

ABSTRACT:
An unfoamed permeable material, which absorbs and desorbs moisture satisfactorily and which is suitable for making thin-walled articles having a maximum thickness of 3 mm, is based on plastic and/or rubber mixtures containing macromolecular hydrophilic fillers. The hydrophilic fillers are synthetic, water insoluble, cross-linked macromolecular materials containing pendent polar groups, which are able to bind water reversibly, e.g. hydroxy, amine, amide, carboxylic and sulfonic groups in H.sup.+, Na.sup.+, K.sup.+, Li.sup.+, Ca.sup.++, or Ba.sup.++ form, or quaternary ammonium groups in CH.sup.-, Cl.sup.- or HSO.sub.4.sup.- form.

REFERENCES:
patent: 2681319 (1954-06-01), Bodamer
patent: 2681320 (1954-06-01), Bodamer
patent: 2972586 (1961-02-01), Van der Neut
patent: 3627703 (1971-12-01), Kojima
patent: 3876565 (1975-04-01), Takashima
patent: 3928704 (1975-12-01), Heidingsfeld

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